One glorious thing about using .sims3packs is that not all is lost when you run into a problem. For one thing, the first thing you should do when your launcher crashes is reopen it. Instead of scrolling through the "All Custom Content" list, do one at a time. You can scroll through Sims, Pets, Lots, Objects, etc all separately. This helps you narrow it down. If it crashes in one, open it up again and go through the others.
I'm having an issue in Objects, so I *slowly* go through the list one mouse click at a time. When it pops up that the launcher has crashed, the last one you uncover is usually the issue. Even if the window has popped up to ask you to close or debug the program, you can move it to the side and uninstall the defective CC. Once it is uninstalled, close the program and repeat.
Funnily enough, all the problems I'm running into are "official" EA DLC. So far, the boardwalk set and Roaring Heights has crashed my launcher.
